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曲线设计4.1 概述设计缓和竖曲线 ,需要知道曲线在任意桩号处的高程。实际上 ,转坡点 (ＰＶＩ)的桩号和高程一般会和曲线参数Ａ、ｒ和ｌ(或Ａ、ｌ和Ｌ)一起作为已知条件给出。这样 ,在求出直缓点ＴＳ和缓直点ＳＴ的高程后 ,也就可以计算出缓圆点ＳＣ和圆缓点ＣＳ的高程了 ,?
Curve Design 4.1 Overview Design to ease the vertical curve, you need to know the curve at any station elevation. In fact, the stakes and elevation of the PVI are generally given as known conditions together with the curve parameters A, r and l (or A, l and L). In this way, after finding the straight ramp TS and the straight point ST elevation, it can also calculate the slow circle SC and the circle slowly CS elevation ,?